2031131233 has 2 divisors, whose sum is σ = 2031131234. Its totient is φ = 2031131232.

The previous prime is 2031131231. The next prime is 2031131251. The reversal of 2031131233 is 3321311302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1751171409 + 279959824 = 41847^2 + 16732^2 .

It is a cyclic number.

It is not a de Polignac number, because 2031131233 - 2¹ = 2031131231 is a prime.

Together with 2031131231, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2031131233.

It is not a weakly prime, because it can be changed into another prime (2031131231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1015565616 + 1015565617.

It is an arithmetic number, because the mean of its divisors is an integer number (1015565617).

Almost surely, 2^2031131233 is an apocalyptic number.

It is an amenable number.

2031131233 is a deficient number, since it is larger than the sum of its proper divisors (1).

2031131233 is an equidigital number, since it uses as much as digits as its factorization.

2031131233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 2031131233 is about 45068.0733224752. The cubic root of 2031131233 is about 1266.4245712371.

Adding to 2031131233 its reverse (3321311302), we get a palindrome (5352442535).

The spelling of 2031131233 in words is "two billion, thirty-one million, one hundred thirty-one thousand, two hundred thirty-three".